A visual, dimensional and functional analysis was performed on the returned device.The difficulty to remove was confirmed.The difficulty to advance could not be confirmed due to the condition of the device.The review of the lot history record identified no manufacturing nonconformities issued to the reported lot that would have contributed to this event.Additionally, a review of the complaint history identified no other similar incidents.The investigation was unable to determine the cause for the reported difficultly to advance, and difficultly to remove.The difficulty to remove was confirmed.The difficulty to advance could not be confirmed due to the condition of the device.In this case, it may be possible that during prep, the stent was damaged which increased due to the interference with the introducer sheath leading to difficulty advancing and difficulty to remove.The additional deformation and material twisted are related to the circumstances of the procedure.The material separation and stent dislodgement are related to packaging of the product for return.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.
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